Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2013) 12, 171 - 181

Research article
Analysis of Relationships between the Level of Errors in Leg and Monofin Movement and Stroke Parameters in Monofin Swimming
Marek Rejman 
Author Information
Department of Swimming, University School of Physical Education, Wroclaw, Poland

Marek Rejman
‚úČ Department of Swimming, University School of Physical Education, ul. Paderewskiego 35, 51-612 Wroclaw, Poland
Email: rejmar@awf.wroc.pl
Publish Date
Received: 25-05-2012
Accepted: 09-02-2013
Published (online): 01-03-2013
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ABSTRACT

The aim of this study was to analyze the error structure in propulsive movements with regard to its influence on monofin swimming speed. The random cycles performed by six swimmers were filmed during a progressive test (900m). An objective method to estimate errors committed in the area of angular displacement of the feet and monofin segments was employed. The parameters were compared with a previously described model. Mutual dependences between the level of errors, stroke frequency, stroke length and amplitude in relation to swimming velocity were analyzed. The results showed that proper foot movements and the avoidance of errors, arising at the distal part of the fin, ensure the progression of swimming speed. The individual stroke parameters distribution which consists of optimally increasing stroke frequency to the maximal possible level that enables the stabilization of stroke length leads to the minimization of errors. Identification of key elements in the stroke structure based on the analysis of errors committed should aid in improving monofin swimming technique.

Key words: Swimming, monofin, technique, evaluation


           Key Points
  • The monofin swimming technique was evaluated through the prism of objectively defined errors committed by the swimmers.
  • The dependences between the level of errors, stroke rate, stroke length and amplitude in relation to swimming velocity were analyzed.
  • Optimally increasing stroke rate to the maximal possible level that enables the stabilization of stroke length leads to the minimization of errors.
  • Propriety foot movement and the avoidance of errors arising at the distal part of fin, provide for the progression of swimming speed.
  • The key elements improving monofin swimming technique, based on the analysis of errors committed, were designated.
 
 
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